Mechanism for blanking material for cups or the like



Feb. 3, 1948. L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIALFOR CUPS OR THE LIKE Original Filed Dec. 17, 1942' 12 Sheets-Sheet L. M. HARVEY Feb. 3, 1948.

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 2 Feb. 1948- L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL- FOR CUPS OR THE LIKE Original Filed D60. 17. 1942 12 Sheets-Sheet s //7 yen for 60 f/ar ey.

Feb. 3, 1948. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 4 Feb. 3, 1948. L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 5 L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Feb. 3, 1948.

Original Filed Dec. 17, 1942 12 Sheets-Sheet 6 Feb. 3, 1948. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec 17, 1942 12 Sheets-Sheet 7 finenfar A00 Harvey fry fy w.

L. M. HARVEY Feb. 3, 1948.

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 8 9 an Q Feb. 3, 1948. L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE I Original Filed Dec. l7, 1942 l2 Sheets-Sheet. 9

L. M. HARVEY Feb. 3, 1948.

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet l0 L. M. HARVEY Feb. 3, 1948.

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 1 1 W P w m 0 m. Z wfi J Z2 6 4 w 3% J, k M 3 A J Feb. 3, 1948. L. M. HARVEY 2,435,309

MECHANISM FOR BLANKING MATERIAL FOR CUPS OR THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 12' cups, filed December Patented Feb. 3, 1948 MECHANISM FOR BLANKING MATERIAL FOR- CUPS OR THE LIKE Leo M. Harvey, La Canada, Calif. Original application December 17, 1942, Serial Divided and this application March 28, 1944, Serial No. 528,385

This invention has to do with a mechanism for cutting or blanking material such as paper for or in the manufacture of paper cups and it is therefore particularly suited for incorporation in a paper cup making machine. A general object of the invention is to provide an improved effective mechanism for blanking and scrap-cutting in a machine of the general character mentioned.

This application is a division of my co-pending application entitled Machine for making paper 17, 1942, Serial No. 469,306.

Another object of this invention is to provide a practical and effective blanking means for a paper cup machine which handles the blank 5 it moves upwardly along a ingle axis without rotation and without lateral movement during the entire period of its formation. The cup blanks are carried upwardly from the plane of the feed table or surface but are never turned or moved laterally and remain on a given axis untilcomletely formed.

The various objects and features of my invention will be fully understood from the following detailed description of a typical preferred form and application of my invention, throughout which description reference is made to the accompanying drawings, in which:

Fig. l is a front elevation of the machine provided by this invention. Fig. 2 is a side elevation of the machine showing the paper supply and feed means. Fig. 3 is an enlarged plan elevation of the machine with the most elevated parts appearing in horizontal cross section. Fig. 4 is an enlarged fragmentary vertical detailed sectional view illustrating the die means in the operated condition and showing adjacent parts of the machine. Fig. 5 is a view similar to Fig. 4 illustrating the cup ejecting or stacking means, a, portion of the paper feed means, the scrap cutting means, etc. Fig. 6 is an enlarged longitudinal detailed sectional view of the main clutch of the machine. Fig. 6 is an elevation view of one of the cams of the clutch shown in Fig. 6. Fig. '7 is a transverse detailed sectional view taken as indicated by line 1'! on Fig. 6. Fig. 8 is an enlarged longitudinal detailed sectional View of a sprocket and clutch assembly embodied in the paper feed means of the invention. Fig. 8 is a fragmentary transverse detailed sectional view of the free running clutch means of the structure shown in Fig. 8. Fig. 9 is an enlarged fragmentary vertical detailed sectional view of a portion of the paper feed means. Fig. 10 is an enlarged fragmentary horizontal detailed sectional view illustrating the cup transferring means.

14 Claims. (01. 164-42) Fig. 11 is a plan view of certain elements of the cup transferring means showing the two positions of the cups during the stage transference and illustrating the different positions of the transferring elements. Fig. 12 isa fragmentary vertical detailed sectional view illustrating a portion of the means for actuating the cup transferring elements. Fig. 13 is an enlarged fragmentary vertical detailed sectional view showing the mechanism for operating the cup transferring means. Fig. 13 is a vertical detailed sectional view of the adjustable connection between the walking beam and the chains. Fig. 14 is an enlarged fragmentary vertical detailed sectional view illustrating the severalmeans for operating the dies. Fig. 15 is an enlarged fragmentary vertical detailed sectional view taken as indicated by line l5-l5 on Fig. 14. Fig. 16 is an enlarged fragmentary vertical detailed sectional view showing the dies in the position preceding the bead forming operation. Fig. 1'? is a View similar to Fig. 16 showing the dies in positions at or near the completion of the bead. Fig. 18 is a diagrammatic view illustrating the paper feed means and the cup transferring means. Fig. 19 is a fragmentary diagrammatic view of the paper feeding means. Fig. 20 is a vertical detailed sectional view of the flute forming die removed from the machine. Fig. 21 is a view similar to Fig. .20 illustrating the flute forming punch. Fig. 22 is a bottom elevation of the flute formin die. Fig. 23 is a plan elevation of the flute forming punch. Fig. 24 is a vertical sectional view of the scrap cutting means apart from the other elements of the machine with certain of the members in side elevation. Fig. 25 is an enlarged plan view of a cup blank after the flutes have been formed therein. Fig. 26 is an enlarged side elevation of the blank provided with the flutes. Fig. 27 is a side elevation of the cup following the flute forming, cup shaping and ironing operations and Fig. 28 is a fragmentary side elevation of the completed cup.

The cup forming machine embodying the present invention may be said to comprise, generally, a supporting and housing case ill, a power means or drive means H for driving or operating the various mechanisms of the machine, a paper feed means l2, a die mechanism [3 which receives the paper from the feed means l2 and cuts it into blanks and forms paper cups therefrom, a cup transferrin and stacking means M for with- .drawing the completed cups from the mechanism l3, and scrap handling means l5.

The case I0 supports the various elements of shaft at the ot are provided with access openings closed by 6 hinged doors is. The top of the case In is flat and horizontal to" carry certain elements. of paper feed means l2, the die mechanism 13; etc; The walls of the case are closed and sealed to prevent the escape 'of the lubricant for the drivimpreventin-g endwise movement of the pulley 31. Amp (may cover the nut 43, It is preferred ing mechanism. The lower portionofthecase; l0 may be provided with a suitable basev 1Tf'adapted to rest on the floor or other support.

In the preferred form of the invention the machine is entirely self-contained and embodies its {a V lubricant within the clutch assembly and to preown power means. In the construction illustrated the power means includes a suitable electric nmtor M mounted on a bracket I8 secured on a wall of the case Ill. The motor M is mounted on, what I will term, the rear side of the case Ill. The

drive means it ischaracterized bya single crank: shaft is and all of the working parts of the-ma-- chine are driven from this single crank shaft. In the preferred construction illustrated; the motor M is mounted'to haveits shaft horizontal andthe crank shaft I9 is rotatably mounted in the lower: portion of the case :9 to be below the shaft of the motor M and to extend at right angles'to the motor shaft. The crank shaft l 9 is rotatably supported by suitable spacedbearingszllln the case: 80

A clutched worm drive is provided between themotor M and the crank shaft 19.

. The clutched drive includes a flanged mounting Plate or carrier 2| secured'to the rear wall of'the case I!) by screws 22 and having a hub 23' which 85 projects freely through an opening 24 in the case wall, see Figs. 6 and '7. The hub 23 'hasan inward extension 25 which projects some distance into the case ill. A horizontal shaft 26 extends longitudinally through the hub 23 andits-extension 25 i0" and continues outwardly from the case H). An anti-friction bearing 2'! in the carrier 21 and an anti-friction bearing 28 in the inner part of the extension 25 support the shaft 26 for free rotation. The hearing?! has shouldered engagement 45 in the carrier 2| and is retained by a ring 29 se'-- cured to the carrier 2! by screws 30. A nut 31'' is threaded on the shaft 26 at one side of the bearing 21 and a rib or annular flange 32 is provided on the shaft at the other side of the bearing 27 59 so that the shaft 26 is held against endwise movement. A nut 33 is provided on the inner extremity of the shaft 26 at one side of the bearing 28 and a bushing or spacer 34 is provided on the elements may assist in holding the shaft against endwise movement.

A worm 35 is fixed or keyed on the shaft 26 at the end of the spacer 34 and meshes with a Worm wheel 36 keyed to the crank shaft IS. The under =60 projecting portion of the clutch shaft 26 at the exterior of the case iii. A belt 38 operates over the pulley 3'! ends. pulley 39 fixed on the shaft of the motor M so that the pulley 31 is driven '70 by the motor. The pulley3'l may be proportioned to serve as a fly wheel and. has a long hub 40 which surrounds the projecting portion of the her side of the bearing28 and these 55 further 35' includes a pulley 37 rotatably supported on the to provide a sealing means or sealing assembly on the above mentioned ring 29 to seal between the ring and the hub of the pulley 31 to retain vent the entranceof dirt into the assembly.

The clutch of the drive means ll includes a sleeve-46= freely slidable on the shaft 28 and located between the nut 3| and the worm 35. An external. annular groovev 4"! is'provided'in the sleeve 46. Fork means'isprovidedfor shiftingthe sleeve 46 back and forth and includes a shaft,

or pin 48 turnably carried by spaced lugs -49;on" the upper side of the hub extension 25, see Fig. '7. A fork 50 is pivotally supportedby the pin 48 between the lugs 49 and projects downwardly. through an'openingfil in the upper wall of the extension 25." A yoke 52 is located betweenthe. arms of the fork and is-pivotally secured thereto by pins 53. The yoke 52' engages in the'groove 41 of the sleeve 46.

Manual means is provided for, effecting longitudinal shifting of the sleeve. A clutch handleor lever 54 is mounted on a side of; the case H] at a. conveniently accessible point near the upper end of thecase, see Fig. 1. A suitable mechanical linkage 55 operatively connects the lever 54 with the fork 50. It will be seen how manual operation of the-lever 54 will result in axial shifting of the sleeve 46 back and forth along the clutch shaft 26. 1

The clutch means further includes an assembly of friction discs 56' arranged. within the outer portion of the pulley hub-40 and an-operative connection. between the shiftable sleeve 46 and the disc assembly for controlling or operating the latter. The discs 56 are disposed within a tubular shell 51 fixed in the pulley hub 40 and are engaged'between spaced collars 58 secured on the, shaft 25. Alternate discs 56 are keyed or fixedto the shaft 26 and the intervening discs 56 are'keyed or fixed to the shell 51. The discs 56 are. adapted to freely pass one another without. engagement or appreciable friction when the clutch is released. r

The means for operating or controlling the clutch disc assembly 56' includes a sleeve 59 freely surrounding the shaft 26 within the pulley hub 40. An inner sleeve 60 is spaced within the sleeve- 59- and is secured to the shaft 26 by a pin Bl or other means. The inner sleeve 60. carries one or more pivoted dogs 62 which are operable to compress the clutch disc assembly 55 to provide' for the transmission of rotation between the pulley 31 and the clutch shaft 26. The dogs 62 act against the'inner collar or ring 58. Outward movement of the outer sleeve 59 serves to actuate the dogs 62 to provide the clutching engagement at the discs 56. Pins 63-project inwardly from the outer sleeve 59 and are adapted to have camming engagement with the dogs 52 to pivot or actuate the dogs when the sleeve 59 is shifted outwardly.

shaft 25 in spaced relation thereto. Ananti-fric- An operative connection is provided between tlon bearing 4! rotatablysupportsthe innerp'or- 7-5 the fork operated sleeve 46 and the dog actuat ing sleeve 59. The clutch shaft 26 is bored from its inner end to have a longitudinal opening 64. A shift pin 65 is shiftable longitudinally in the opening 64. The shift pin 65 serves to transmit movement from the sleeve 46 to the sleeve 59. A longitudinal slot 56 is provided in the shaft 26 to communicate with its opening 64 and a pin 6! is engaged in 01' secured to the sleeve 46 and engages with or is connected to the shift pin 65 to connect the yoke and shift pin. A 1ongitudinal slot 68 is provided in the clutch shaft 26 at a point spaced outwardly from the bearing 4! and a pin 69 is secured to or carried by the outer shaft sleeve 59 and operates in the slot 68. In practice the pin 69 may pass completely through the slot 68 and through an opening in the shift pin 65. The pins 61 and 69 have suflicient longitudinal movement in their respective slots 66 and 68 to provide for movement of the sleeve 59 between the position where the clutch is released and the position where the clutch disc assembly 56 is engaged to transmit rotation from the pulley 3'! to the clutch shaft 26.

It is preferred to incorporate a brake means in the clutched drive so that the mechanism may be quickly stopped when the clutch is disengaged. This means may include a tubular brake ring 18 secured within the hub 23 and having shouldered engagement in the hub. The brak ring has a tapered internal surface. The sleeve 46, which surrounds the clutch shaft 26 and which is operated by the fork and yoke assembly, carries a tapered or frusto-conical brake part II which is engageable in the ring 10 to brake movement of the machine parts.

It will be seen that when the clutch handle or lever 54 is moved in one direction the sleeve 46 moves outwardly so that the shift pin 65 and outer sleeve 59 likewise move outwardly and upon outward movement of the sleeve 59 the pins 63 actuate the dogs 52 to engage the disc assembly 56 for the transmission of rotation from the pulley 3'! to the shaft 26 and thus drive the crank shaft l9. Upon movement of the clutch lever 54 in the other direction the sleeve 46, the shift pin 65 and the sleeve 59 are moved inwardly to release the disc assembly 56 and thus disengage the clutch and the brake part II is brought into cooperation with the brake ring 18 to stop movement of the machine parts. It is to be understood that a suitable switch means is provided for the control of the motor M.

The feed means [2 operates to intermittently advance or feed a web of paper or other material to the mechanism [3 which cuts the cup blanks therefrom and then forms the blanks into the completed cups. The feed means l2 embodies several important features. For example, it embodies means for supporting or employing a largecapacity supply roll 12 of waxed paper, or the like, and automatically intermittently withdraws a pre-determined length of paper from this supply and delivers it to the cutting and forming mechanism I 3 in timed relation thereto. The feed means i2 is readily regulable to advance any desired amount or length of the paper or material to provide for the making of cups throughout a very wide range of cup sizes. This adjustment, together with appropriate changes in the dies of the mechanism i3, adapts the single 'machine for the manufacture of a wide range of containers 0r cups. The feed means l2 operates in timed synchronism with the mechanism l3 and is positive and efficient in its feeding of the paper as the supply'roll reduces in' diameter until completely exhausted. v

The feed means l2 includes a structure for supporting a supply of the material or paper of which the cups are to be formed. This structure may include. a support or bracket i3 mounted on the front of the case I0 and carrying a pair of forwardly projecting rigid arms 12. A horizontal shaft 15 extends between and is supported by the outer portions of the arms 14. The shaft '15 serves to carry the supply roll 12 of paper.

' The roll 12 comprises a single continuous web or length of waxed paper or other material of which the cups are to be formed. As illustrated, the shaft 15 is adapted to carry a large sup ply roll 12. Adjustable spools 16 are provided on the shaft 15 to centerand support the roll I2, Fig. 3. It is to be understood that the roll 12 is readily replaced when exhausted. The supply roll 12 is positioned so that the web or strip S of the paper passes from the upper portion of the roll toward the front of the case Ill.

Idler means is provided to prevent the development of slack in the strip S as it passes from the roll 12 to the feed means proper of the machine. A pair ,of levers or arms 11 is pivotally supported on the end portions of the shaft 15 and projects rearwardly toward the case l0. A shaft 18 extends between the end portions of the arms TI and supports a freely rotatable roll 19. This roll 19 is in the nature of an idler or tensioning roll. The paper strip S passes down under the roll 19 and continues back up to the feed means proper of themachine. It is preferred to spring load the arms 11 so that a proper tension is maintained on the strip S and so that the paper will not buckle or develop excessive slack. In the construction illustrated leaf springs are secured to the bracket arms 14 and bear downwardly on the arms 11 so that the idler roll 19 is onstantly urged downward.

The feed means l2 further includes a pair of spaced feed rolls 8| and 82 for advancing the strip S across the top of the machine, see Figs. 9 and 18. Mountingmeans or brackets 83 and 84 are provided on the front and the rear walls, respectively, of the case [0 adjacent the top of the case to carry the feed rolls 8! and 82 and the associated parts. The feed rolls 8| and 82 are carried by horizontal shafts which are rotatably supported by suitable bearings 85 on the brackets 83. It is preferred to face or cover the feed rolls BI and 82 with rubber or friction material to assure the positive advance of the paper strip S. In accordance with the invention the feed rolls 8| and 82 are connected for simultaneous intermittent rotation. A sprocket 85 is provided on an end of each feed roll 8| and 82 and an endless chain 81 operates over the two sprockets 86. v The chain 81 is operated or driven by the power means by a drive to be described below. A roll 88 is located above the forward feed roll 8| to coope iate with the paper strip S to maintain the strip in frictional cooperation with the feed roll so that the strip is positively advanced. The roll '88 is carried by a shaft 88 which is eccentric with respect to its end portions 90, see Fig.'18. These end portions Sill-are turnably mounted in suitable bearings 93 on the forward bracket 83 a nd a lever or handle 92 is fixed to one end of the shaft 89 so that the shaft may be manually turned. The operator may move the roll 88 into and out of cooperation with the strip S by merely shifting or operating the handle 92.- When the handle 92 is moved bearings 94 an the e r tra k .I 02 and extends to ll-9 18 directi n. the r ii 88gissloweiredto .prB-gg; I .7

against the Strip '8 ahdthiis Iit neri a eme ith the-ro an d I benadira o'edby the same, thefha dlgifiz, isturned in the other directio the #91185 zais d from. the strip S nd the st ip isnoflon dr nor advance by th s 1011, 8L f h m t a ly pported oll 8 o -ins la ao gxq.

adjustah along the ibe am to tail? or np lii qt' qi'fthe f ed oha n 81 mi are, varytheext nt of aol a' n.cm ntfv e im a n .19 5 9 mi .9 "0 9 u t n a nthe pp r ortion the t A l Qk i 'li fi i fime 911 5 4 h the. slot and carries a ok m whieh p j cts r 11 as i pr vid d abo e. thiefrear 'i d rbl a a v the em. engagement o the p1 Q15 ll so uholds the bloc againsttqrm g,

gse' through gpn i jm t e 36% has its axis spaced forwai'dly rofn th'ej therear feed r011 92 softhdt it to f 'aiticulaifly 1 festive in maintaining the paper strip 's; 11,1; en; gagemnt with the face of th .1181 lt'ig p ferred to face or cover-the "tolls 88 d 93 rlubbr or friction material. I. 13. r d 11 8 dvant5 b paper remaining after the Clip Ia; cu rom e ip S time 'L The machine preferably; i cl 7 ai in in removi g or withci avsong etripis ,from the supply r011 12. T el d s a pa r oi arms ,5 pivota -1y Suppo ts a pin 96 seemed to the for "bird bra okeli arms o'r0 J'.ect forwardly Sand 10' pass above the center of the t' r a e p efe a ly urved upw g 1 f I I 9 ct int r wi h the uppli' r9 A hp'nz tajjl, pin r sha t 9-! is arried bythe outer ds t; the arms 95 and 2. 11:11.98 isfiely iota H the shaft 91. The 5011 ta iggaaigted to, e or r downwardly against the p ri p eiy Of su ply from 12 and is faced with riihbe or f I an'openin we; we 1 ii fin as nan mm e s beam 11.12 m e held against m yem tt the ha h, head 'I I1. on ita mail lock. :95? hold the. shrew. against rotation, 1 8.9 Thfififlfi il a !".-7-. i1 h 1 i l"! r l a l -IQ to be readily engage'abie by g wregmh or jsimilai; m l -in erted. through an jqpemn' in th a wa I" It 'il l-beseen thatilpoh loosening or w 'l l 5 may bex otatedto $1. m?

f warslonaw ti r m th pivbtl, the he beam, In? to. h ent bir 11. he @sTnok'eoi move ent impa te 31 t o' f mat r al to ave driving the outermost ioonvolutioh of for the roll 98 comprises a flat operated over the above dBsCtibfid-illfi v r011 98. There may e a S gle bentral y d posed belt 99 engaged i-r annulaiygiomies filthev iiol ls 88 and -98. The belt as pa' es 0 r pull'ey 109. the p n 96 an e ta e. or idler lfil spaced forwardly $1 p 19 l rubber belt 99 is ez'ctehs'ible pd of) float; y to compensate for tchang svin the ang l mri gti tior; of the arms 95 as the diametl of t j ly r011 12 grows less duringvo 1:11 on o I ohine. It will be seen that the f fqarflf 8 drives the adjustable I011 88 and that th 99 operatively conneots the 911 93 with the 88 so that the roll 98 is' efiRQymy ye r t roll 8 s st n roifitins. "th tee 11 72 an n ad nci g the pap r strip from the regimes; a horizontal shaft, l23iwi-th s b? Surface f Supply stfi tialcl aranc spro ket L99 iseupporteid Th dr ve fo the eed means 12 iecharaete ed on the shaft" I23 by anti-Fraction bearin s latest by t a i l t bi i Wh e the ma al-W 55 that i ma ha e free, retationonthe shaft. A

may be advanced any seleotd of'redu (11s m: oggtgal internal annular groove I25 is. provided p g1 igng J [9 and axing is fixed duri g each p fie o ob m ne it lel t e i. ...e m .125 has a .ser s of angng ne and supported byte you Mi d-fist a1 mtohed faces 1.2L each termina e a wall o f the ca e, 0, seems, l 1 1 an. abruptshoulder 128.. A collar I294i v keyed ts), thev shaft I23 within the sprocket I09 find anemia: enlargement or flangei l-su -e gtepsd s into. the above mentioned groove 1 Theflange 1.30 is provided with a, finished beam I02 is arranged withii ithe 0W th a e in nd i si a. 1..:a 9 e the ian lit he al n beam mxlextends t; a direction tiarisverse of the crank Shaft 1 9; Agoim dung incl '0 ha fi i m "1 fiii i dfin e pediatecrank I06 of the. its. other end, qo ne'ted, W1

, @mber L31 rides, on each pitched sur.=-

, 4 a v l e. t fate ,l-Zlpf the ring 125,;and themembers are to; by a pin 101. During gach g'evio tiop of e cooperhle with the periphery of the flange I311. gran; sh h 1-9 the ng-beemtm w pes or I3 are engagedbetween the shoulders PWUTJSM-P ae do ni A p i o fl ible e, m 9 members 13,! to :yielding'ly urge the i neeha ns is con s: i,.;memtersto rideoown the-faces 121mm coopera;

ii" aJ-coneentflt-mrinheral s fa Abali tion with the peripheral surface of the flange I30. When the sprocket I09 is turned in a clockwise direction, as indicated by the arrow in Fig. 18, the members i3I are caused to ride inwardly on the surfaces I21 and thus almost immediately bind between the surfaces I21 and the periphery of the flange I30 to transmit rotation from the sprocket I09 to the shaft I23. When the sprocket I09 is given retrograde movement the members I3I ride back Or out on the surfaces I21 and the sprocket I09 is free to turn without producing rotation of the shaft I23. The shaft I23 extends outwardly beyond both ends of the clutched sprocket I09 and is rotatably supported at one end by an antifriction bearing I33 carried by a flange or bracket I30 of the case I0. A spacer I35 is provided on the shaft between the bearing I33 and the adjacent bearing I24. The collar I29 within the sprocket I 09 serves to space the two bearings I24 and the bearings have shouldered cooperation with the sprocket I09. A nut I36 is threaded on the shaft I23 and clamps against the outermost bearing I23. It will be seen that the structure just described serves to hold the clutched sprocket I39 against axial movement along the shaft I23.

The shaft I23 of the clutched sprocket I09 carries a sprocket I31 for driving the chain 81. The sprocket i3! is keyed on the end portion of the shaft :23 which projects beyond the bearing I33. A screw I33 is threaded in the end portion of the shaft I23 and clamps a washer I39 against the hub of the sprocket I31 to hold the sprocket in against the bearing I33, which in turn bears inwardly against the spacer I35. A lubricant passage Hit leads inwardly through the shaft I23 from the outer end of the screw I38 to carry lubricant to the interior of the collar I29 which has a lubricant channel I4I leading to the bearings I24.

The drive sprocket I31 keyed to the clutch shaft I23 is spaced below and forwardly of the rear feed roll 32 and an idler sprocket I42 is spaced below the feed roll sprocket B6 to direct the chain 31 over the drive sprocket I31. The

idler sprocket I42 has an eccentric shaft I43 carried by suitable bearings I44 on the rear case bracket 84 and the eccentric shaft may be adjusted or turned so that the idler sprocket I42 takes up any slack that may develop in the chain 81. It will be seen that upon the downward stroke of the walking beam I02 that the chains I08 cause rotation of the sprocket I09 and this rotation is transmitted to the drive sprocket I31 through the clutch members I3I and the shaft I23 so that the chain 81 is moved a given distance to advance a predetermined length or portion of the paper strip S to the cutting and cup forming mechanism I3.

Means is provided to turn back or return the clutched sprocket I09 during the upward strokes of the walking beam I02. This means is preferably a spring means associated with the clutched sprocket I09. In the preferred construction illustrated the spring return for the sprocket I09 includes an anchor block I45 secured in an open ing I46 of a flange or bracket I41 in the case I0. The block I45 is tubular to receive the projecting end portion of the shaft I23 and the block I45 may be of sufficient length to partially telescope over the nut I36. A cup or flange I50 may be provided on the adjacent end of the sprocket I03 to telescope over the end portion of the anchor block I45 with substantial clearance. A coiled torsional spring I48 surrounds the anchor block I45 and has an out-turned end portion 'upward stroke the spring I48 turns the sprocket I09 back so that the chains I08 are re-wound on the sprocket. The spring I48 operates to completely restore the sprocket I09 during each upward stroke of the walking beam I02 to prepare the sprocket for the next active stroke. During the return movement of the sprocket I03, that is,

during the upward stroke of the walking beam I02 the clutch members I3I ride outward on the surface I21 or at least do not wedge between the surface I21 and the periphery of the flange I30 and the sprocket I09 is turned back without producing rotation of the shaft I23. Accordingly, the drive chain 81 of the paper feed means remains stationary during the return strokes or upward strokes of the walking beam I02. It is to be observed that the feed means I2 described in detail above is entirely automatic and operates to advance the paper strip a given distance, that is to supply a given amount of paper to the mechanism I2, during each revolution of the crank shaft I9. 7

The mechanism I3 receives the strip S as it is advanced by the feed means I2 and cuts a disc shaped cup blank from each strip portion thus advanced and then performs a number of operations on the blank to shape the same into a complete strong, self-sustaining container or cup having a beaded or rolled rim. The mechanism I3 performs the several operations during the time period required for the advancement of each portion of the strip S, that is, during each complete up and down cycle of the walking beam I02 and the mechanism I3 may be operated rapidly to form a large number of completed cups per minute. The blank cutting and forming mechanism I3 comprises a number of forming dies and punches assembled and operated in concentric relation relative to a single axis so that all of the cup blank cutting and cup forming operations occur while the cup remains on a single axis. In the preferred structure illustrated the cup C moves but a short distance along a vertical axis without turning or rotating and is at the upper part or side of the case I0 at all times so that it cannot be soiled by the lubricant of the drive means, etc.

The mechanism I3 includes a supporting plate I52 mounted on the upper wall of the case I0 to extend across an opening I53 therein. A horizontal passage or guide channel I54 passes below this plate I52. The channel I54 extends from the forward feed roll 8I and serves to guide or direct the strip S to the mechanism I3 and to guide the scrap from the mechanism. The first operation performed by the mechanism I3 in the manufacture of a given cup C is the cutting of the cup blank and I will proceed with a description of the blank means, best illustrated in Fig. 4.

The blank cutting means includes a fixed ring I55 and a movable ring or sleeve I56 cooperable one with the other to shear on the paper and thus form a disc-shaped blank. The stationary ring I55 is secured to the under side of the fixed plate I52 by screw I51 and projects downwardly beyond a centering flange I58 on the under side of the plate. The ring I55 has a fiat lower end thereby either the m is likewise a tiibfilii ehi riike p i av1r'1g"a' entralopeifiin .6 j e registers .with' an opening m then r52. "Ihilbb'f ar we isfiXed to the uncle hie ilfomfitspehp to thebehtral opening H5. f V a 01 ,i ewm "F P P' JY'I P 111 upper end 0 the collar 63 e dt gw$ggg 43; provided onflthe' uppe sldefof the fluteformi g hei fli tes' ihithepaper blank. It will he 15a heperetee' t-hp we'r shaft r'bra nkfs'haft e ,"WW PLWZ IKWF punch U 19 'Ihemeehe-ieeeheie the-er'heeheed I61 'Pr?Se-diupW@*Td1Y-'Wmhm the Statmmry I t 5 V a i. the fgroove's lm and ribs I80 cooperate to form mcludes ears or lugs i65pro ectmg from opposite I 1 ends of theer'oss' head [6 I arikiiiaite-bf operatin a t -9 1 7 51 1. 2. 1%? blink, -91.1 99 9?? 9 '66 .surd o i -40 the die and punch gives the-blank'its initial d shed downwardly theiefi'om, s'

cam track or cam ridge gagement of the inner with the inner rollers downward stroke of the shape. of a. punch I94 and The punch and its upper portion is shaped to give the wall of the punoh I94 is 13 cam I88 has an outwardly projecting continuous I89 and the tie members I81 on the rods I96 carry means for cooperating with these cam ridges. In practice, each tie member I81 carries an upper roller I99 for cooperating with the outer surface of a cam ridge I89 and carries a lower roller I9I for cooperating with the inner surface of the cam ridge I89. The rollers I99 and I9I are rotatably supported on shafts or pins I92 and I93, respectively, on the members I81. The cams I88 have identical shapes and settings and are formed to cause rather sudden or rapid upward and downward movements of the flute forming punch I13. .The cooperation of the external surface of the cam ridges I89 with the rollers I99 produces the upward or active movement of the flute forming punch I13 and the ensurfaces of the ridges I99 I9I produces the return or punch. It will be seen that during each revolution of the crank shaft I9 the flute forming punch I13 is positively operated up and down so that the flutes are formed in the cup blank and the blank is given a dished configuration.

When the flutes have by the punch I13 and die been formed in the blank I14, as just described,

the mechanism I3 operates to compress the flutes of the cup blank and to give the blank its final cup shape, the collapsing or compressing of the flutes permitting or providing for the forming of the cup C to the required shape and also giving the wall of the cup substantial rigidity.

. The mechanism I3 includes a pair of cooperatin die elements for giving the cup blank its cup The lower die element is in the nature the upper die element is a socket-like die I95 facing downwardly to receive the punch I94, see Fig. 4. In accordance with the invention the punch I94 and the die I95 are in coaxial telescopic relation with the other cup forming elements of the mechanism I3.

The cup forming die I94 is an elongate tubu lar member adapted to move up through the openings I19 and I11 with considerable clearance to enter or cooperate with the downwardly moving die I95 which is disposed above the plate I52. I94 has a cylindrical lower portion the finished cup C the desired configuration. -In the preferred construction the upper portion of round in cross section and its external surface I99 gradually slopes upwardly and inwardly. This external active surface I96 of the punch I94 is smooth and regular to engage within the cup C without marring or distorting the paper of the cup. As best illustrated in Figs.

16 and 17, an annular. upwardly facing shoulder I91 occurs on the exterior of the punch I94 where the sloping surface I96 mates or joins the cylindrical surface on the lower portion of the punch I94. This shoulder I91 is preferably flat and occupies a plane normal to the longitudinal axis of the punch I94. The upper end of the punch I94 is flat and normal to its longitudinal axis except for a raised annular ridge I98 occurring at its periphery.

The cup forming punch I94 is carried by a vertically movable rod or column 299 through the medium of a spring loaded slack connection. The

column 299 has its lower portion received in a central opening 29I in a cross head 292 which is located below the cross head I8I. A flange 293 on the column 299 engages against the upper side of the cross head 292 and anut 294 is threaded T upwardlythrough the column I92 '14 on the column 299 to engage against the under side of, thecross head 292 and thus secure the column to the cross head. The column 299 passes with ample clearance and is provided with a central longitudinal opening 295 which extends through it from its upper end to its lower end. The upper end portion of the column 299 is reduced in external diameter. A stem 296 is slidable in the upper portion of the-column opening 299 and the stem is provided with a central longitudinal opening 291.

The cup forming punch I94 is remov- ;ably attached to theupper end of the slidable stem 299 to move therewith. A screw 298 is entered in the upper end of the punch I94 and its head has shouldered engagement within the punch. The screw 298 extends beyond the lower end of the punch I94 and is threaded in the opening 291 of the stem 296. The screw 298 has shouldered cooperation with the upper portion of the stem 299 at 299, Means is provided for limiting the movement of the stem 296 and punch I94 relative to the column 299. This means may include a pin 2I9 carried in a transverseopening in the stem 296. The pin 2I9 projects from opposite sides of the stem 296 and extends into diametrically opposite longitudinal slots 2 in the wall of the column 299.

. and the upper end per end of able and is The punch I94 is spring held or spring loaded, being urged upwardly so that it is spaced some distance above the upper end of the column 299 when in its idle or unactuated condition. The means for yieldingly urging the punch I94 upwardly comprises a coiled spring 2I2 arranged within the opening 295 of the column 299. The spring 295 is held under compression between the lower end of the punch carrying stem 298 of a plug 2I3 threaded in the lower end of the column 299. The spring 2I2 is normally under compression to hold the punch I94 where its lower end is spaced above the upthe column299 but the spring is yieldsubject tofurther compression when the punch I94 is engaged in the die I95, as will be later described.

Thecup forming-punch I94 is operated by the shaft I9 through the medium of crank pins and connecting rods. A crank pin 2I4 projects from the outer sideof each bull gear I61, see Fig. 14. The pins 2! are turnably engaged in openings 2I5 in the lower ends of connecting rods 2I6. The ends of the cross head 292 are provided with .outwardly projecting studs or pins 2". These 1' the upper ends of ;the connecting rods 2I6.

pins 2I 1 are turnably received in openings 2 I8 in It will be seen how the crank means just described produces upward and downward movement of the cup forming punch I94 during each revolution of the crank shaft. In practice, the parts may be related so that the punch I94 is moving upwardly during the upward actuation of the flute forming punch I13 and the upper end of .-the punch I94 may be in a plane at the upper punch I94 continues upwardly to push the cup blank upwardly from the die I14. In thisrconnection it is to be observed that the inner corners or faces of the flute forming die I14 may be rounded or bevelled off so that the cup blank I .is not injured or distorted when the punch I95 draws it upwardly out of the die I14. 

